I work as a consultant in the CRM space and read every book on the subject. Most unfortunately are either rehashes of technology methodology and change management or focus just on one to one marketing without the full business perspective.
This book, however, breaks the mould. It is designed as a pocket book, with each page making a significant point on CRM supported with key bullet points. I get the feeling the authors could have written a 1000 page manual, but decided to condense their knowledge for maximum effect, into a book that can be read in a couple of hours.
If you are involved in CRM, carry this book with you. Generally, if you have an issue, you'll find it addressed in here and it won't take you an age to find it